package com.liuning.lock;

/**
 * 死锁：多个线程互相抱着对方需要的资源，然后形成僵持
 */
public class DeadLock {
    public static void main(String[] args) {
        Makeup makeup1 = new Makeup(0, "pumpkin1");
        Makeup makeup2 = new Makeup(1, "pumpkin2");

        makeup1.start();
        makeup2.start();
    }

}

//口红
class Lipstick {

}

//镜子
class Mirror {

}

class Makeup extends Thread {

    //需要的资源只有一份儿，用static来保证只有一份儿
    static final Lipstick lipstick = new Lipstick();
    static final Mirror mirror = new Mirror();

    //选择
    int choice;
    //人
    String girlName;

    Makeup(int choice,String girlName) {
        this.choice = choice;
        this.girlName = girlName;
    }

    @Override
    public void run() {
        makeup();

    }

    /**
     * 化妆，就是互相持有对方的锁，就是需要拿到对方的资源
     */
    private void makeup() {
        //化妆
        if (choice == 0) {
            synchronized (lipstick) {
                System.out.println(this.girlName + "获得口红的锁");
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            synchronized (mirror) {
                System.out.println(this.girlName + "获得了镜子的锁");
            }
        }else {
            synchronized (mirror) {
                System.out.println(this.girlName + "获得镜子的锁");
                try {
                    Thread.sleep(2000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            synchronized (lipstick) {
                System.out.println(this.girlName + "获得了口红的锁");
            }
        }
    }
}
